package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {
	@PostMapping("/upload")
	public Result uploadFile(MultipartFile file){
		try {
			//判断文件是否存在
			if(file==null){
				throw new RuntimeException("文件名不存在");
			}
			//获取文件的完整名称
			String originalFilename = file.getOriginalFilename();
			if (StringUtils.isEmpty(originalFilename)){
				throw new RuntimeException("文件不存在");
			}
			//获取文件的扩展名称  abc.jpg   jpg
			String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
			//获取文件内容
			byte[] content = file.getBytes();
			//创建文件上传的封装实体类
			FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,content,extName);
			//基于工具类进行文件上传,并接受返回参数  String[]
			String[] uploadResult = FastDFSClient.upload(fastDFSFile);
			//封装返回结果
			String url = FastDFSClient.getTrackerUrl()+uploadResult[0]+"/"+uploadResult[1];
			return new Result(true, StatusCode.OK,"文件上传成功",url);
		}catch (Exception e){
			e.printStackTrace();
		}
		return new Result(false, StatusCode.ERROR,"文件上传失败");
	}
	/**
	 * 删除文件
	 */
	@DeleteMapping("/del")
	public Result deleteFile(String fileId)  throws Exception{
		try {
			int i = FastDFSClient.deleteFile1(fileId);
		} catch (Exception e) {
			e.printStackTrace();
			throw new Exception("文件删除失败");
		}
		return new Result();
	}
}
